package com.cinc.mdm.modules.materialClass.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cinc.mdm.modules.materialClass.entity.MdmMaterialClass;
import com.cinc.mdm.modules.materialClass.mapper.MdmMaterialClassMapper;
import com.cinc.mdm.modules.materialClass.service.IMdmMaterialClassService;
import org.jeecg.common.exception.JeecgBootException;
import org.jeecg.common.util.oConvertUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @Description: 物料分类
 * @Author: jeecg-boot
 * @Date:   2021-09-16
 * @Version: V1.0
 */
@Service
public class MdmMaterialClassServiceImpl extends ServiceImpl<MdmMaterialClassMapper, MdmMaterialClass> implements IMdmMaterialClassService {

	@Override
	public void addMdmMaterialClass(MdmMaterialClass mdmMaterialClass) {
		if(oConvertUtils.isEmpty(mdmMaterialClass.getPid())){
			mdmMaterialClass.setPid(IMdmMaterialClassService.ROOT_PID_VALUE);
		}else{
			//如果当前节点父ID不为空 则设置父节点的hasChildren 为1
			MdmMaterialClass parent = baseMapper.selectById(mdmMaterialClass.getPid());
			if(parent!=null && !"1".equals(parent.getHasChild())){
				parent.setHasChild("1");
				baseMapper.updateById(parent);
			}
		}
		baseMapper.insert(mdmMaterialClass);
        // 更新根节点
        MdmMaterialClass treeRoot = getTreeRoot(mdmMaterialClass.getPid());
        String rootid = treeRoot == null ? mdmMaterialClass.getId() : treeRoot.getId();
        MdmMaterialClass mdmMaterialClassModify = new MdmMaterialClass();
        mdmMaterialClassModify.setId(mdmMaterialClass.getId());
        mdmMaterialClassModify.setRootid(rootid);
        baseMapper.updateById(mdmMaterialClassModify);
    }

	@Override
	public void updateMdmMaterialClass(MdmMaterialClass mdmMaterialClass) {
		MdmMaterialClass entity = this.getById(mdmMaterialClass.getId());
		if(entity==null) {
			throw new JeecgBootException("未找到对应实体");
		}
		String old_pid = entity.getPid();
		String new_pid = mdmMaterialClass.getPid();
		if(!old_pid.equals(new_pid)) {
			updateOldParentNode(old_pid);
			if(oConvertUtils.isEmpty(new_pid)){
				mdmMaterialClass.setPid(IMdmMaterialClassService.ROOT_PID_VALUE);
			}
			if(!IMdmMaterialClassService.ROOT_PID_VALUE.equals(mdmMaterialClass.getPid())) {
				baseMapper.updateTreeNodeStatus(mdmMaterialClass.getPid(), IMdmMaterialClassService.HASCHILD);
			}
		}
		baseMapper.updateById(mdmMaterialClass);
	}

	@Override
	@Transactional(rollbackFor = Exception.class)
	public void deleteMdmMaterialClass(String id) throws JeecgBootException {
		//查询选中节点下所有子节点一并删除
        id = this.queryTreeChildIds(id);
        if(id.indexOf(",")>0) {
            StringBuffer sb = new StringBuffer();
            String[] idArr = id.split(",");
            for (String idVal : idArr) {
                if(idVal != null){
                    MdmMaterialClass mdmMaterialClass = this.getById(idVal);
                    String pidVal = mdmMaterialClass.getPid();
                    //查询此节点上一级是否还有其他子节点
                    List<MdmMaterialClass> dataList = baseMapper.selectList(new QueryWrapper<MdmMaterialClass>().eq("pid", pidVal).notIn("id",Arrays.asList(idArr)));
                    if((dataList == null || dataList.size()==0) && !Arrays.asList(idArr).contains(pidVal)
                            && !sb.toString().contains(pidVal)){
                        //如果当前节点原本有子节点 现在木有了，更新状态
                        sb.append(pidVal).append(",");
                    }
                }
            }
            //批量删除节点
            baseMapper.deleteBatchIds(Arrays.asList(idArr));
            //修改已无子节点的标识
            String[] pidArr = sb.toString().split(",");
            for(String pid : pidArr){
                this.updateOldParentNode(pid);
            }
        }else{
            MdmMaterialClass mdmMaterialClass = this.getById(id);
            if(mdmMaterialClass==null) {
                throw new JeecgBootException("未找到对应实体");
            }
            updateOldParentNode(mdmMaterialClass.getPid());
            baseMapper.deleteById(id);
        }
	}

	@Override
    public List<MdmMaterialClass> queryTreeListNoPage(QueryWrapper<MdmMaterialClass> queryWrapper) {
        List<MdmMaterialClass> mapList = new ArrayList<>();
        List<MdmMaterialClass> dataList = baseMapper.selectList(queryWrapper);
        if(oConvertUtils.listIsNotEmpty(dataList)){
            List<String> rootIdList = dataList.stream().map(MdmMaterialClass::getRootid).distinct().collect(Collectors.toList());
            LambdaQueryWrapper<MdmMaterialClass> rootQuery = new LambdaQueryWrapper<>();
            rootQuery.in(MdmMaterialClass::getId,rootIdList);
            mapList = baseMapper.selectList(rootQuery);
        }

        return mapList;
    }

	/**
	 * 根据所传pid查询旧的父级节点的子节点并修改相应状态值
	 * @param pid
	 */
	private void updateOldParentNode(String pid) {
		if(!IMdmMaterialClassService.ROOT_PID_VALUE.equals(pid)) {
			Integer count = baseMapper.selectCount(new QueryWrapper<MdmMaterialClass>().eq("pid", pid));
			if(count==null || count<=1) {
				baseMapper.updateTreeNodeStatus(pid, IMdmMaterialClassService.NOCHILD);
			}
		}
	}

	/**
     * 递归查询节点的根节点
     * @param pidVal
     * @return
     */
    private MdmMaterialClass getTreeRoot(String pidVal){
        MdmMaterialClass data =  baseMapper.selectById(pidVal);
        if(data != null && !"0".equals(data.getPid())&& !"".equals(data.getPid())&& null != data.getPid()){
            return this.getTreeRoot(data.getPid());
        }else{
            return data;
        }
    }

    /**
     * 根据id查询所有子节点id
     * @param ids
     * @return
     */
    private String queryTreeChildIds(String ids) {
        //获取id数组
        String[] idArr = ids.split(",");
        StringBuffer sb = new StringBuffer();
        for (String pidVal : idArr) {
            if(pidVal != null){
                if(!sb.toString().contains(pidVal)){
                    if(sb.toString().length() > 0){
                        sb.append(",");
                    }
                    sb.append(pidVal);
                    this.getTreeChildIds(pidVal,sb);
                }
            }
        }
        return sb.toString();
    }

    /**
     * 递归查询所有子节点
     * @param pidVal
     * @param sb
     * @return
     */
    private StringBuffer getTreeChildIds(String pidVal,StringBuffer sb){
        List<MdmMaterialClass> dataList = baseMapper.selectList(new QueryWrapper<MdmMaterialClass>().eq("pid", pidVal));
        if(dataList != null && dataList.size()>0){
            for(MdmMaterialClass tree : dataList) {
                if(!sb.toString().contains(tree.getId())){
                    sb.append(",").append(tree.getId());
                }
                this.getTreeChildIds(tree.getId(),sb);
            }
        }
        return sb;
    }

}
